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1. (WO2017157309) A SEAL FOR BARREL SHAPED CYLINDER

Pub. No.:    WO/2017/157309    International Application No.:    PCT/CN2017/076837
Publication Date: Fri Sep 22 01:59:59 CEST 2017 International Filing Date: Thu Mar 16 00:59:59 CET 2017
IPC: F16J 9/04
F02F 5/00
Applicants: KO, Stanley Moon Kai
Inventors: KO, Stanley Moon Kai
CHANG, Kyong Tae
Title: A SEAL FOR BARREL SHAPED CYLINDER
Abstract:
A helical coiled seal (08) for sealing a barrel -shaped cylinder piston-cylinder assembly, comprising: a piston-sealing C-shaped ring (401); a connecting C-shaped ring (402) comprising an inward wing (501) protruded inwardly from a section near a first end on an inner perimeter of the connecting C-shaped ring (402), and an outward wing (502) protruded outwardly from a section near a second end on an outer perimeter of the connecting C-shaped ring (402); and a cylinder-sealing C-ring (403); wherein the piston-sealing C-ring (401) is connected end-to-end to the first end of the connecting C-ring (402) and cylinder-sealing C-ring (403) is connected end-to-end to the second end of the connecting C-ring (402) forming a three-ring helical structure having a contraction-dilation response time sufficiently short required for the up-down stroke speed of the cylinder piston-cylinder assembly.